UVA rays penetrate the skin more deeply than UVB rays and are primarily responsible for premature skin aging and wrinkling. UVA rays have also been shown to cause more skin damage at the cellular level. UVB rays damage the outer layers of the skin. They are the main cause of sunburn and play a key role in the development of skin cancer.
Without protection, UVA and UVB rays
penetrate and damage your skin.
A broad spectrum sunscreen protects
your skin from both UVA and UVB rays.